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<FONT color="green">001</FONT>    package org.hackystat.utilities.time.period;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    <a name="line.3"></a>
<FONT color="green">004</FONT>    /**<a name="line.4"></a>
<FONT color="green">005</FONT>     * Tag interface for &lt;code&gt;Day&lt;/code&gt;, &lt;code&gt;Week&lt;/code&gt;, &lt;code&gt;Month&lt;/code&gt; objects.<a name="line.5"></a>
<FONT color="green">006</FONT>     * <a name="line.6"></a>
<FONT color="green">007</FONT>     * @author (Cedric) Qin Zhang<a name="line.7"></a>
<FONT color="green">008</FONT>     */<a name="line.8"></a>
<FONT color="green">009</FONT>    public interface TimePeriod extends Comparable&lt;Object&gt; {<a name="line.9"></a>
<FONT color="green">010</FONT>      <a name="line.10"></a>
<FONT color="green">011</FONT>      /**<a name="line.11"></a>
<FONT color="green">012</FONT>       * Returns the first day in this TimePeriod. <a name="line.12"></a>
<FONT color="green">013</FONT>       * @return The first day associated with this time period. <a name="line.13"></a>
<FONT color="green">014</FONT>       */<a name="line.14"></a>
<FONT color="green">015</FONT>      public Day getFirstDay();<a name="line.15"></a>
<FONT color="green">016</FONT>    }<a name="line.16"></a>




























































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